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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 10 |
| 5 | 16 |
| 6 | 20 |
| 7 | 41 |
| 8 | 44 |
| 9 | 55 |
| 10 | 67 |
| 11 | 76 |
| 12 | 548 |
| 13 | 751 |
| 14 | 1962 |
| 15 | 3318 |
| 16 | 3760 |
| 17 | 5873 |
| 18 | 7729 |
| 19 | 8074 |
| 20 | 15502 |
| 21 | 33847 |
| 22 | 65888 |
| 23 | 89836 |
| 24 | 167786 |
| 25 | 512688 |
| 26 | 1401686 |
| 27 | 2520988 |
| 28 | 2897654 |
| 29 | 5552333 |
| 30 | 6352323 |
| 31 | 7981750 |
[1,2,4,10,16,20,41,44,55,67,76,548,751,1962,3318, 3760,5873,7729,8074,15502,33847,65888,89836, 167786,512688,1401686,2520988,2897654,5552333, 6352323,7981750] |